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Nov. 10 Lecture
Part 2
23
Nursing
Graduate
11/12/2014

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Term
THE BODY MUST GENERATE MORE NEGATIVE INTRPLEURAL PRESSURES DURING INSPIRATION THAN WE WOULD EXPECT DUE TO WHAT?
Definition
OVERCOME THE RESISTANCE TO AIRFLOW
Term
DURING THE FIRST PART OF INSPIRATION IS THERE TURBULENT OR LAMINAR AIRFLOW?
Definition
TURBULENT
Term
THE SECOND PART OF INSPIRATION IS THERE TURBULENT OR LAMINAR FLOW?
Definition
LAMINAR
Term
DURING INSPIRATION WHEN IS THERE THE MOST AIRWAY RESISTANCE?
Definition
IN THE MIDDLE OF INSPIRATION. DIFFERENCE GETS BIGGER, BUT ONCE AIR IS MOVING, IT DOESN;T TAKE THE SAME AMOUNT OF FORCE TO CONTINUE TO KEEP IT MOVING.
Term
DURING EXPIRATION DO WE HAVE TO GENERATE A HIGHER, LESS NEGATIVE, INTRAPLEURAL PRESSURE TO PUSH AIR OUT?
Definition
YES
Term
NEGATIVE PRESSURE CNA ACTUALLY FALL ALL THE WAY DOWN TO -50 OR -60CMH20. HOW IS THIS POSSIBLE?
Definition
BY INHALING AGAINST RESISTANCE.
Term
IF YOU HAVE A PNEUMOTHORAX WHAT HAPPENS TO THE CLOSED SYSTEM?
Definition
IT IS NO LONGER A CLOSED SYSTEM. AS VOLUME INCREASES, THE PRESSURE REMAINS THE SAME.
Term
WHAT HAPPENS OF INTRAPLEURAL PRESSURE EQUALS ATMOSPHERIC PRESSURE?
Definition
THE VOLUMES AND PRESSURES WILL BE ZERO
Term
WHAT IS THE DIFFERENT BETWEEN VOLUME AND CAPACTITIES?
Definition
A CAPACITY IS THE SUM OF 2 OR MORE VOLUMES.
Term
WHAT IS TIDAL VOLUME?
Definition
AMOUNT OF AIR BROUGHT INTO AND EXHALED FROM THE LUNGS IN ONE EUPNEIC BREATH. ABOUT 500ML
Term
WHAT IS INSPIRATORY RESERVE VOLUME (IRV)?
Definition
AMOUNT OF AIR THAT CAN BE BROUGHT INTO THE LUNG FOLLOWING A EUPNEIC INSPIRATION.
Term
WHAT IS EXPIRATORY RESERVE VOLUME (ERV)?
Definition
AMOUNT OF AIR THAT CAN BE EXHALED FROM THE LUNGS FOLLOWING A NORMAL EUPNEIC EXPIRATION.
Term
WHAT IS THE FORMULA FOR RESIDUAL VOLUME (RV)?
Definition
RV=FRC-ERV
Term
WHAT IS RESIDUAL VOLUME?
Definition
AMOUNT OF AIR THAT ALWAYS REMAINS IN LUNGS. CANNOT BE EXHALED NO MATTER HOW HARD YOU TRY.
Term
WHAT IS INSPIRATORY CAPACITY?
Definition
AMOUNT OF AIR THAT WE CAN FOREFULLY INSPIRE
Term
WHAT IS THE FORMULA FOR IC?
Definition
IC= TV + IRV
Term
WHAT IS THE FORMULA FOR FRC?
Definition
RV + ERV
Term
WHAT IS VITAL CAPACITY?
Definition
AMOUNT OF AIR THAT CAN BE FORCEFULL INHALED AND EXHALED FROM THE LUNGS.
Term
WHAT ARE 2 FORMULAS FOR VITAL CAPACITY?
Definition
VC= IRV + TV + ERV OR IC + ERV
Term
WHAT ARE THE 2 FORMULAS FOR TOTAL LUNG CAPACITY?
Definition
TLC = TLC=VC + RV OR TLC= IC + FRC
Term
WHAT THREE MEASUREMENTS ARE WE UNABLE TO MEASURE?
Definition
ANY VOLUME OR CAPACITY THAT HAS THE COMPONENT OF RESIDUAL VOLUME IN IT, CANNOT BE MEASURED BY SPIROMETRY. SPIROMETRY ONLY MEASURES WHAT CAN BE INHLAED AND EXHALED. UNABLE TO MREASURE RV, FRC, AND TLC.
Term
WHAT TYPE OF METHOD DO WE MEASURE IN THE LUNGS OF WHAT WE CAN'T MEASURE WITH SPIROMETRY.
Definition
HELIUM DILUTION METHOD
Term
IF THE PATIENT INHALES MAXIMALLY, WE CLOSE THE ATM CIRCUIT AND OPEN THE HE. CIRCUIT. WILL THE HE DILUTE TLC?
Definition
YES, NOT VC!!
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